org.apache.hadoop.hbase.util

Class ModifyRegionUtils

java.lang.Object

org.apache.hadoop.hbase.util.ModifyRegionUtils

@InterfaceAudience.Private
public abstract class ModifyRegionUtils
extends Object

Utility methods for interacting with the regions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ModifyRegionUtils.RegionEditTask
static interface	ModifyRegionUtils.RegionFillTask

Method Summary

Methods

Modifier and Type	Method and Description
static void	assignRegions(AssignmentManager assignmentManager, List<HRegionInfo> regionInfos) Triggers a bulk assignment of the specified regions
static HRegionInfo[]	createHRegionInfos(HTableDescriptor hTableDescriptor, byte[][] splitKeys)
static HRegionInfo	createRegion(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.fs.Path tableDir, HTableDescriptor hTableDescriptor, HRegionInfo newRegion, ModifyRegionUtils.RegionFillTask task) Create new set of regions on the specified file-system.
static List<HRegionInfo>	createRegions(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, HTableDescriptor hTableDescriptor, HRegionInfo[] newRegions) Create new set of regions on the specified file-system.
static List<HRegionInfo>	createRegions(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, HTableDescriptor hTableDescriptor, HRegionInfo[] newRegions, ModifyRegionUtils.RegionFillTask task) Create new set of regions on the specified file-system.
static List<HRegionInfo>	createRegions(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.fs.Path tableDir, HTableDescriptor hTableDescriptor, HRegionInfo[] newRegions, ModifyRegionUtils.RegionFillTask task) Create new set of regions on the specified file-system.
static List<HRegionInfo>	createRegions(ThreadPoolExecutor exec, org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.fs.Path tableDir, HTableDescriptor hTableDescriptor, HRegionInfo[] newRegions, ModifyRegionUtils.RegionFillTask task) Create new set of regions on the specified file-system.
static void	editRegions(ThreadPoolExecutor exec, Collection<HRegionInfo> regions, ModifyRegionUtils.RegionEditTask task) Execute the task on the specified set of regions.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

createHRegionInfos

public static HRegionInfo[] createHRegionInfos(HTableDescriptor hTableDescriptor,
                               byte[][] splitKeys)

createRegions

public static List<HRegionInfo> createRegions(org.apache.hadoop.conf.Configuration conf,
                              org.apache.hadoop.fs.Path rootDir,
                              HTableDescriptor hTableDescriptor,
                              HRegionInfo[] newRegions)
                                       throws IOException

Create new set of regions on the specified file-system. NOTE: that you should add the regions to hbase:meta after this operation.

Parameters:

conf - Configuration

rootDir - Root directory for HBase instance

hTableDescriptor - description of the table

newRegions - HRegionInfo that describes the regions to create

Throws:

IOException

createRegions

public static List<HRegionInfo> createRegions(org.apache.hadoop.conf.Configuration conf,
                              org.apache.hadoop.fs.Path rootDir,
                              HTableDescriptor hTableDescriptor,
                              HRegionInfo[] newRegions,
                              ModifyRegionUtils.RegionFillTask task)
                                       throws IOException

Create new set of regions on the specified file-system. NOTE: that you should add the regions to hbase:meta after this operation.

Parameters:

conf - Configuration

rootDir - Root directory for HBase instance

hTableDescriptor - description of the table

newRegions - HRegionInfo that describes the regions to create

task - ModifyRegionUtils.RegionFillTask custom code to populate region after creation

Throws:

IOException

createRegions

public static List<HRegionInfo> createRegions(org.apache.hadoop.conf.Configuration conf,
                              org.apache.hadoop.fs.Path rootDir,
                              org.apache.hadoop.fs.Path tableDir,
                              HTableDescriptor hTableDescriptor,
                              HRegionInfo[] newRegions,
                              ModifyRegionUtils.RegionFillTask task)
                                       throws IOException

Create new set of regions on the specified file-system. NOTE: that you should add the regions to hbase:meta after this operation.

Parameters:

conf - Configuration

rootDir - Root directory for HBase instance

tableDir - table directory

hTableDescriptor - description of the table

newRegions - HRegionInfo that describes the regions to create

task - ModifyRegionUtils.RegionFillTask custom code to populate region after creation

Throws:

IOException

createRegions

public static List<HRegionInfo> createRegions(ThreadPoolExecutor exec,
                              org.apache.hadoop.conf.Configuration conf,
                              org.apache.hadoop.fs.Path rootDir,
                              org.apache.hadoop.fs.Path tableDir,
                              HTableDescriptor hTableDescriptor,
                              HRegionInfo[] newRegions,
                              ModifyRegionUtils.RegionFillTask task)
                                       throws IOException

Create new set of regions on the specified file-system. NOTE: that you should add the regions to hbase:meta after this operation.

Parameters:

exec - Thread Pool Executor

conf - Configuration

rootDir - Root directory for HBase instance

tableDir - table directory

hTableDescriptor - description of the table

newRegions - HRegionInfo that describes the regions to create

task - ModifyRegionUtils.RegionFillTask custom code to populate region after creation

Throws:

IOException

createRegion

public static HRegionInfo createRegion(org.apache.hadoop.conf.Configuration conf,
                       org.apache.hadoop.fs.Path rootDir,
                       org.apache.hadoop.fs.Path tableDir,
                       HTableDescriptor hTableDescriptor,
                       HRegionInfo newRegion,
                       ModifyRegionUtils.RegionFillTask task)
                                throws IOException

Create new set of regions on the specified file-system.

Parameters:

conf - Configuration

rootDir - Root directory for HBase instance

tableDir - table directory

hTableDescriptor - description of the table

newRegion - HRegionInfo that describes the region to create

task - ModifyRegionUtils.RegionFillTask custom code to populate region after creation

Throws:

IOException

editRegions

public static void editRegions(ThreadPoolExecutor exec,
               Collection<HRegionInfo> regions,
               ModifyRegionUtils.RegionEditTask task)
                        throws IOException

Execute the task on the specified set of regions.

Parameters:

exec - Thread Pool Executor

regions - HRegionInfo that describes the regions to edit

task - ModifyRegionUtils.RegionFillTask custom code to edit the region

Throws:

IOException

assignRegions

public static void assignRegions(AssignmentManager assignmentManager,
                 List<HRegionInfo> regionInfos)
                          throws IOException

Triggers a bulk assignment of the specified regions

Parameters:

assignmentManager - the Assignment Manger

regionInfos - the list of regions to assign

Throws:

IOException - if an error occurred during the assignment